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js/rhino/org/mozilla/classfile/ClassManager.java

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+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1997-2000 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ * Patrick C. Beard
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU Public License (the "GPL"), in which case the
+ * provisions of the GPL are applicable instead of those above.
+ * If you wish to allow use of your version of this file only
+ * under the terms of the GPL and not to allow others to use your
+ * version of this file under the NPL, indicate your decision by
+ * deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL.  If you do not delete
+ * the provisions above, a recipient may use your version of this
+ * file under either the NPL or the GPL.
+ */
+
+package org.mozilla.classfile;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+/**
+ * ClassManager
+ *
+ * Provides a way to delegate class loading to an outer class loader
+ * regardless of its actual type. For this to work, the class loader
+ * must define the following public methods, which will be called
+ * using reflection:
+ *   <code>public Class defineClass(String name, byte[] data);</code>
+ *   <code>public Class loadClass(String name, boolean resolve);</code>
+ * This defines the protocol that will be used.
+ */
+public class ClassManager {
+    public static Class defineClass(ClassLoader loader, String name, byte[] data)
+    {
+        try {
+            Class[] types = { String.class, byte[].class };
+            Method defineClass = loader.getClass().getMethod("defineClass", types);
+            Object[] args = { name, data };
+            return (Class) defineClass.invoke(loader, args);
+        } catch (Exception ex) {
+        }
+        return null;
+    }
+    
+    public static Class loadClass(ClassLoader loader, String name, boolean resolve)
+    {
+        try {
+            Class[] types = { String.class, boolean.class };
+            Method loadClass = loader.getClass().getMethod("loadClass", types);
+            Object[] args = { name, new Boolean(resolve) };
+            return (Class) loadClass.invoke(loader, args);
+        } catch (Exception ex) {
+        }
+        return null;
+    }
+}

js/rhino/src/org/mozilla/classfile/ClassManager.java

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+/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1997-2000 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ * Patrick C. Beard
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU Public License (the "GPL"), in which case the
+ * provisions of the GPL are applicable instead of those above.
+ * If you wish to allow use of your version of this file only
+ * under the terms of the GPL and not to allow others to use your
+ * version of this file under the NPL, indicate your decision by
+ * deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL.  If you do not delete
+ * the provisions above, a recipient may use your version of this
+ * file under either the NPL or the GPL.
+ */
+
+package org.mozilla.classfile;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+/**
+ * ClassManager
+ *
+ * Provides a way to delegate class loading to an outer class loader
+ * regardless of its actual type. For this to work, the class loader
+ * must define the following public methods, which will be called
+ * using reflection:
+ *   <code>public Class defineClass(String name, byte[] data);</code>
+ *   <code>public Class loadClass(String name, boolean resolve);</code>
+ * This defines the protocol that will be used.
+ */
+public class ClassManager {
+    public static Class defineClass(ClassLoader loader, String name, byte[] data)
+    {
+        try {
+            Class[] types = { String.class, byte[].class };
+            Method defineClass = loader.getClass().getMethod("defineClass", types);
+            Object[] args = { name, data };
+            return (Class) defineClass.invoke(loader, args);
+        } catch (Exception ex) {
+        }
+        return null;
+    }
+    
+    public static Class loadClass(ClassLoader loader, String name, boolean resolve)
+    {
+        try {
+            Class[] types = { String.class, boolean.class };
+            Method loadClass = loader.getClass().getMethod("loadClass", types);
+            Object[] args = { name, new Boolean(resolve) };
+            return (Class) loadClass.invoke(loader, args);
+        } catch (Exception ex) {
+        }
+        return null;
+    }
+}